Vehicle lift



C. BOSICK VEHICLE LIFT Mrch 3, 1931.

Filed April lO m/enm Charles Basick.

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.i vide an improved lift Patented Mar. 3, 1931 PATENT OFFICE CHARLES' BOSICK, 0F JEFFERSON COUNTY, COLORAD VEHICLE LIFT Appncationmea April io,

which is operated by mechanical rather than hydraulic means,tl iereby dispensing with the use of expensive pumps, compressors and similar machines necessary to the operation of hydraulic lifts.

A further object of the invention is toproor elevator for vehicles adapted to engage and lift vehicles in such manner as to leave the wheels thereof free for rotation and repair.` p

A further object ofthe invention is to provide an improved vehicle lift or elevator adapted to be driven and operated by any convenient form of hand or mechanical power. l i

A furtherobject4 ofthei'nvention is to be found in the provision of means whereby an improved'vehicle lift or elevator may be automaticallysupported and maintained at any desired'el'evation.

. A'fu'rtherobject of the invention is to be Vfound in the provision of an improved velii'cle lift or elevator thatis positive and elficient in operation, simple and inexpensive of manufaetureand installation, economical to maintain and susceptible of installation in any suitable location.

My invention consists in the construction, arrangement and* combination of elements hereinafter set forth, pointed out in my claims and lillustrated by the accompanying drawing, in which Figure 1 is a side elevation of the improved lift or elevator as installed for practical use and in elevated position, dotted lines indicating the retracted position thereof. VFigure 2 is a plan view of the showing of Figure 1.

1928. semi No. 268,868.

Figure 3 is a vertical section on the indi cated line 33 of Figure 2. Figure 4 is a horizontal section on the indicated line 4-4 of Figure 1, certain parts being broken away to conserve space. Figure 5 is a plan of the pit installation for the improved lift or elevator, all moving or operating parts being omitted; dotted lines indicating alternative positions of one of the elements.

\ In the construction of my improvement as shown, a platform is composed of rails 10, 11 secured-in parallel, spaced relation to a plate 12 positioned transversely of and beneath mid-portions of said rails, the spacing of said rails and the width of said plate being less than the standard gauge of vehicles, so that a vehicle may be driven or positioned in straddling relation above said platform when the latter is in lowered position. Spacing bars, 13, maybe fixed between the rails 10 and 11 to preserve said railsin proper relative alinement and an apertured plate, 14, is positioned transversely of said rails adjacent one end thereof and fixed thereto, said plate 14 serving to further lbrace and strengthen the platform assembly and having an aperture of such size and shape as to receive and accommodate the differential housing of a motor vehicle when and as the platform is elevated into lifting position. A relatively 'long screw 15, having `external threads of-low pitch, is rigidly secured to and extends downwardly from and at right angles to the plane of the plate 12 andcentrally of said plate, said screw being slidingly received for free axial reciprocation in a tube or housing 16 vertically disposed beneath, centrally of and opening into a pit 17. Tubes or cylinders 18, 19, similar to the tube 16, are vertically disposed in parallel relation with and space-d on opposite sides from said tube 16 with their upper ends opening into the pit 17 and cylindrical guides 2() and 21 are slidingly mounted for axial reciprocation in the cylinders 18 and The guides tively longerthan the screw 17 so-that said shown `guides will still have a portion of their lengths engaged in the slide bearings when Vthe lower-end of,thescrew.13 has been raised above .the upper'vend of the,;tube 16. As in Figure 3, the upper and lower ends ofthe tubes 16, 18 and 19 may be secured in proper relative with concrete or cement.

having an axial bore and internal threads corresponding to the threadsof-the .screw 1,5

within said bore, is mounted in threaded .p engagement on iand about the screw 15 in beneath said positionito rotate between-theA guides 2Ufand 21 adjacent-.the iloorlofthe pit V17, and a plate 23 ismounted on ftheiioo-r -of .saijdepit gea'r;22,said ,plate 23 lsupport'- ing anti-friction devices` suchas .a 'ballfbear- Ving 24 to receive the thrust from the :said

bevel gear 22. Thus is Vprovisionmade `for raising and lowering-the platform. above -described, .sincef'rotation ofthe igear22 in one direction ,will-operate to raise :the screw 15, plate 12, ,guides 20;and 21, andrails .10. and 11, while reverse rotation lvof .said1gear will permit` the platform. assembly carried' hyi the screwl' tobe lowered, the low :pit-ch of the threadson said :screw servingto hold .fthe platform in any `fdesire-d :position when :the gear 22 is held.' stationary-or not rotated'. The plate 23 is extended radiallyof thetub'e 16 and supports journals 25 and26 in spaced relation beyondV and 4kextending :above said gear 22, and ashaft`27shaving abevelipinion 28on one endin meshing relation .with the gear 22, is mounted .for rotation inthe jour-v nals and `26 and extendsradilally of 'the gear 22 through a trough orchannel 29 opening through one side-of thepit 17,. the remote end of said shaft beingsupported byza joursuch as a .belt wheel nal 'bearing 30 in.any convenient location and'carrying a means of receiving power, '31., han-'d crank, 'cran k throw, sprocket wheelsor thelik-e, Asi-ndicated` by'dotted lines in Figure-@fthe plate v23 zmay `be setat the time-ofiinstallat'ion at any angle-to the pit z17fto afford convenient passage for lthe shaft'27.` Y I Y 'i f .'In-the practical operation of-my improvement, any suitable` power connections yhaving been :made between the remote endroitv the shaft 27 and asource of pow-er, application of power .to said-shaft y'will rotate :the .fpin'ion 28 and .drive the .gear22, rotation of said latter gearaeting on thescrew 15 -tora-isesaid screw land :the platform carried thereby, ire; verse-drivingfof .the I-pinimi 28 .servingkto guides fit snugly and are free position by surrounding'th om A bevel gear Y 22 Ywith said other slide bearin lower the screw 15 and platform.Y The spacing of the rails 10 and 11 being less than the standard vehicle gauge, a vehicle may be moved into straddling relation over said rails the differential housing of said vehicle positioned above the apertured plate 14 and the driving mechanism of the lift actuated to raise said rails, whereupon the rails in their upward travel will engage beneath the axles of said vehicle and raise said vehicle. Itis readily to be seen that the engagement of the-.rails 10 `and,11 withtheaxlesfor fixed portions of the .vehicle lea-ves fthe wheels thereof free to rotate and makes adjustments and repairs of said Vwheels a simple and eX- -peditious--task withoutithe necessity of furtheriacling or elevating said wheels. Likewise, the skeleton form of the supporting platform,permits,free access to various parts of the vehicle, facilitating and eXpediting any :werkte fbe don'efthereon.

Since ,many changes-or modifications of form i and f-constuction `may be; without departingv Ifromth'efspirit O'flmy invention, I wish to ybe'understooc'l fas `being. lilnidied by the scope of the appendedfclaimsfrather than any description or illustrativeshowingofthe improvement. v

7I claimfas my; invention- ;1.v A vehicle 'lift comprising .a skeleton platfrom, .-an f externallythreaded. screw and guidesin spaced, parallelrelationdepending at right angles from said platform, spaced, verticallygdispiosed slide'bearings adapted to receive said fscrew Yand 1gui-des, a transverse f posed i yrelativeI to` said pit, a .skeleton platform above -andfoverlyin-g said Ypit, an `externallythre-aded screw lixe'd tio and depending centrallyY at right angles fromsaidipflatfo'rm and in sliding engagement :with .said central "slide bearing, guidesFX-ed-to Aand depending 1n spa-ced, parallelrelationfwith said 'screwlfrom said platform and in sliding :engagement Y gs; a platein vsaid pit surrounding and.:extendingradiallyfrom the upper! end of :said central an internally-threaded gear "rotatable-on and ijn Nthfreaaai engagein-erft .with said screw above isaidplate, antiiaition 1-dev-ice fbe'- slideV bearing,

100 plate on the upper fend ofthe=slide bearii'igffor tween said plate and gear, spaced `iournal hearings carried by saidrplate, a shaft mountecl for rotation in said journal bearings and extending radially of said gear, a pinion on one end of Said Shaft in meshing relation with said gear, said shaft extending along said passage from said pit and having power rev Vceiving means on its reinote end. Signed at Denver, in the county of Deliver and State of Colorado, this 20th day of March, 1928.

CHARLES BOSICK.

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